& developer

Candidate Screening Questions (7)

Architecture & Experience

Question:
Can you describe a recent full-stack application you architected end-to-end using and React What were your design decisions and why

What to listen for:

• Clear explanation of architecture
• Backend frontend ownership
• Trade-offs (performance scalability security)

Deep Knowledge

Question:
How does the event loop work and how does it impact application performance

Strong answer includes:

• Non-blocking I/O
• Event loop phases
• Avoiding blocking code

API Design & Security

Question:
How do you design and secure REST or GraphQL APIs in a production environment

Strong answer includes:

• Authentication (JWT/OAuth)
• Authorization & RBAC
• Rate limiting validation logging

4 React Performance Optimization

Question:
How do you prevent unnecessary re-renders and optimize performance in large React applications

Strong answer includes:

• memo useCallback useMemo
• Code splitting / lazy loading
• State normalization

Database & Scalability

Question:
How do you choose between SQL and NoSQL databases Can you give an example from your experience

Strong answer includes:

• Data consistency vs scalability
• Real-world use case
• Indexing & query optimization

DevOps & CI/CD

Question:
Describe your experience with Docker and CI/CD pipelines. How do you ensure safe and reliable deployments

Strong answer includes:

• Docker images & containers
• CI pipelines (build test deploy)
• Rollbacks environment separation

Problem-Solving & Debugging

Question:
Tell me about a critical production issue you faced and how you diagnosed and resolved it.

Strong answer includes:

• Structured troubleshooting approach
• Monitoring/logs
• Root cause analysis

Role: Full Stack Developer ( / )
Location (Onsite/Remote): Onsite Mount Laurel NJ (Local Only)

Must-Have Hands-On Experience (Highlight)

• 10 years full-stack development experience
• Strong hands-on backend development (APIs microservices)
• Strong hands-on frontend development (modern UI performance)
• End-to-end application development deployment and support
• CI/CD Docker and cloud-based application delivery

Must-Have Skills Set (Technical & Functional)

Backend:

• ( NestJS)
• REST & GraphQL APIs
• Microservices architecture

Frontend:

• Hooks Redux / Context
• Modern UI development responsive design

Database & Infra:

• MongoDB PostgreSQL MySQL Redis
• Docker CI/CD (GitHub Actions Jenkins GitLab CI)
• Cloud platforms (AWS / Azure / GCP)

Other:

• JavaScript TypeScript
• Git Agile/Scrum
• Performance security scalability

Must-Have Keywords in Resume

Full Stack Developer


JavaScript
TypeScript
REST API
GraphQL
Microservices
Docker
CI/CD
AWS / Azure / GCP
MongoDB
PostgreSQL

What Exactly Client Is Looking For (Short Description)

Client is seeking a senior-level Full Stack Developer (10 years) with strong and expertise to build optimize and maintain scalable secure web applications. The role is hands-on covers backend APIs frontend UI DevOps and cloud and requires onsite presence in Mount Laurel NJ.